It's being developed with help from the National Science Foundation, the Department of Energy, and electricity and natural gas giant Xcel Energy.

这个项目得到美国国家科学基金会，能源部，电力和天然气巨头Xcel公司的联合资助。

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It calls for Xcel Energy to close four coal-fired units in the region, switch another to natural gas and build a gas-fired plant to help meet federal clean-air standards.

要求埃克·西尔能源公司关掉这个地区的四个燃煤发电机组，把另一个燃煤机组更换为燃气机组，并新建一个燃气发电厂，以符合联邦的清洁能源标准。

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In Friday trading, Xcel Energy, Inc. shares are currently off about 0.5% on the day.

FORBES: Xcel Energy About To Put More Money In Your Pocket

Analysts generally think investors should stand pat on Xcel, with 12 of 15 analysts rating it hold.

FORBES: Earnings Preview: Xcel Energy

It says that Xcel is reluctant, and would prefer to invest more in combined cycle natural gas plants.

FORBES: Boulder Battles for Control of Xcel Energy's Assets